#include <stdio.h>
int n,k,st[18];
void back(int j)
{
 int i;
 if (j==k)
 {
  for (i=0;i<k;i++)
   printf("%d ",st[i]);
  printf("\n");
 }
 else
  for (i=st[j-1]+1;i<=n+j-k+1;i++)
  {
   st[j]=i;
   back(j+1);
  }
}
int main()
{
 freopen("combinari.in","r",stdin);
 freopen("combinari.out","w",stdout);
 scanf("%d %d",&n,&k);
 int i;
 for (i=1;i<=n-k+1;i++)
 {
  st[0]=i;
  back(1);
 }
 return 0;
}